Speaking at the third annual meeting of The Property and Freedom Society in Bodrum on Friday, May 23, financial journalist Peter Brimelow1 presented his views on immigration under the title “Immigration is the Viagra of the State—A libertarian case against Immigration.” However, his argument had little concern for the controversies that divide libertarians on the issue of immigration.2 After a brief look at Brimelow’s comments, I shall consider the requirements an argument should meet if it is to amount to a libertarian case for or against a particular policy such as a liberal or a restrictive immigration policy.3 Then I shall offer a critique of libertarian philosopher Hans-Hermann Hoppe’s attempt to build a case against immigration on widely accepted libertarian principles. Finally, I shall present some test cases for judging the plausibility of the argument.